I can upgrade the shelter - Chapter 23: Upgrades and Survival Points (Requesting Recommendations! Requesting Favorites!)

Perhaps it is the choice of fate. As a senior otaku, Qian Lingfeng got the “steel shell system”. However, when he swept the world with the system, became a local rich man, made all kinds of beautiful women, opened a harem, and realized the ultimate fantasy of thousands of otaku, he found that things seemed far from simple!
When the end comes, biochemical zombies suddenly come down, fierce beasts are in power, bloodthirsty zerg roam to kill the world, and human lives are comparable to dirt. Where will weak human beings go in this world? Is humanity going to be extinct? Or … can an otaku save the fate of the human race?

- Description from Novelupdates

As a long-time Naruto fan, John downloaded what was advertised as the latest and most highly anticipated Naruto mobile game. However, as soon as the download finished, a blinding light enveloped him. When he regained his vision, he was shocked to find that he had become the orphan of Konoha—Haruto Itsuki. To make matters worse, upon his arrival, the Nine-Tails Rebellion began. Now, he must find a way to survive and navigate the chaotic ninja world during one of its most dangerous and turbulent times.

“Ding!”“Congratulations on receiving the following Unique Skills:-–Appraisal (Basic)–Skill Absorption (Mythic)–Universal Synthesis (Ultimate)”_____________________________________“Synthesis Skills— Swift Sword Strike + Fire Toad's Breath.”“Ding!”“Congratulations! Your Skill Synthesis was successful.”“Your skills evolved into: Azula Sword Strike.‌”“Synthesis Materials— Titanium Runic Sword + Wyvern Bones”“Congratulations! You Synthesis was successful. Your Sword has evolved into Skeletal Dragon Sword.”-----In a heart-wrenching tale of loneliness and despair, Ethan Smith's life has been one of unending tragedy. Orphaned at a young age and tormented by a relentless terminal illness, he spent his final days confined to a cold, confined hospital room.As he takes his last breath, he awakened in a mysterious void, where Ethan is given the opportunity to choose three unique skills that will define his new existence. With millions of options but only three choices, he carefully selects his path, setting the stage for an extraordinary journey after death.Reincarnated into a fantastical world filled with magical Skills, powerful beings, and untold dangers, Ethan must navigate his new life, wielding the skills he chose to survive and thrive in a realm where anything is possible.But the question remains: Will this second life bring him the happiness and purpose he was denied in his first, or will it lead him down an even darker path?